Dirt Drill. Boring a utility access hole under a sidewalk or driveway is hard work and often requires hiring a sub. With Dimension Tools' Bullet Mole, you can do the job yourself, says the company. Using a sledgehammer or demo hammer, you pound the ground-boring probe through the dirt; its hardened steel tip breaks through rocks and roots, leaving a smooth hole for conduit or pipe. A 4-foot version costs $521. Dimension Tools, 888/650-5554. www.bulletmole.com

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